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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 13747.2-2019 |
Methods for chemical analysis of zirconium and zirconium alloys—Part 2：Determination of iron content—1,10-phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry 锆及锆合金化学分析方法 第2部分：铁量的测定 1,10-二氮杂菲分光光度法和电感耦合等离子体原子发射光谱法 |
China National Standards content—1 |
 English PDF |
| GB/T 6730.44-2017 |
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthol spectrophotometric method 铁矿石 锌含量的测定 1-(2-吡啶偶氮)-2-萘酚分光光度法 |
China National Standards content—1 |
English PDF |
| GB/T 14849.11-2016 |
Methods for chemical analysis of silicon metal—Part 11：Determination of chromium content—1,5-Diphenylcarbohydrazide spectrophotometric method 工业硅化学分析方法 第11部分：铬含量的测定 二苯碳酰二肼分光光度法 |
China National Standards content—1 |
English PDF |
| GB/T 31931-2015 |
Zinc or zinc alloy coating on steel sheets or strips—Determination of hexavalent chromium content—1,5-Diphenylcarbohydrazide (diphenylcarbazide) spectrophotometric method 钢板及钢带 锌及锌合金镀层中六价铬含量的测定 二苯碳酰二肼分光光度法 |
China National Standards content—1 |
English PDF |
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